Grinding-mill



(No Model.)

No. 561,317. Patented June 2, 1896..

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gl W" h N m INVENTOR /0. 9.7m j T%76 NirEn STATES PATENT OFFICE.

HENRY J. HUGHES, or BROOKLYN, NEW YORK.

GRlNDlNG-IVIILL.

SPECIFICATION forming part of Letters Patent N o. 561,317, dated June 2, 1896.

Application niet April 24, 1895.

To all whom t may ooi/toorn.:

Beit known that I, HENRY J. HUGHES, a

` citizen of the United States, and a resident of of my improved grinding-mill, parts being shown in elevation. Fig. Il is a detail vertical transverse section taken on the line II II of Fig. I, looking inwardly. Fig. III is a detail section of the pan-centering device.

A represents two vertical reduction rolls or chasers mounted loosely upon a horizontal shaft B common to both rolls. The shaft B is held from lateral movement by means of standards or supports C C', mounted on a suitable bed-plate or platform C2, and having detachable port-ions C3 to permit of the unshipping of the shaft B. The rollers are each vprovided with bushings D, by which they are supported rotatably on the shaft. The eX- treme ends of the shaft carry bearing-blocks I, fitting between the separable parts of the standards C C', being guided vertically in the latter. Surrounding the shaft and located on the inner side of the bearing-blocks are distance sleeves or thimbles H, and located` on the shaft on the inner side of the sleeves are washers E, against which the rollers bear outwardly, while on the shaft on the inner side of the rollers are located lockingrings F, having screw-bolts G which extend therethrough, and are held by friction against the shaft and thus keep the rollers from moving inwardly on the shaft, on which shaft the rollers rotate.

.J is a horizontal rotatable pan in which the rollers with their shaft are supported.

K is a vertical centering-pin extending into the hub L of the pan. Located over the hub and pin is a shield or bridge N, which constitutes the inner or central rim of the pan and prevents the contents thereof from gaining access to the working parts. The centering-pin K, which is shown in section in Fig. III, is adapted to be finely adjusted by means of screw-bolts M and follower-blocks O. The pan J can by these means be adjusted horizontally.

F is a beveled cog-wheel secured to a horizontal driving-shaft Q, mounted in bearings Q2 secured to the bed-frame. The bed-frame has a step O4, in which is located a bearing box or sleeve K, in which turns the lower end of the centering-pin. Secured to the bottom of the pan is an outer annular ring R, having inverted annular bevel-gear R, with which the bevel gear-wheel P meshes. Mounted on the outer end of the driving-shaft Q is abandpulley S, by which the driving-shaft is operated. On the inner portion ofthe annular ring is an upper annular bevel-track T. Mounted on the bed-plate and surrounding the step is a lower annular bevel-track complementary to the upper track. Between these two tracks are correspondingly beveled antifrictionbearing rollers U, mounted on the outer ends of the radial arms V, extending from the step through a ring W. The standard C has an intermediate bearing C5, located between the drivin g-shaft Q and the bearing-block I. Vithin the bearing C5 is' an eccentric bearingblock Z, provided with a lever Z', by which it is oscilla-ted to raise or lower the inner end of a dru1nshaft X, carrying a hoisting-drum X'. The outer end of the drum-shaft is mounted in an elliptical bearing-block 0"', `mounted in a correspondingly-snaped bearing C7 of a short standard C8. rlhe winding-drum X has a rim Y brought into contact with the friction-wheel Q', located on the shaft Q when the eccentric is oscillated to bring the rim into frictional contact with the friction wheel, the elliptical bearing-block atv the opposite end of the winding-drum permitting the inner end of the latter to be lowered so as to rotate the winding-drum.

Having thus described my invention, the following is what I claim as new therein and desire to secure by Letters Patent:

A grinding-mill comprisinga bed-plate, the

IOO

the centering-pin, the bearing-sleeve Within the top, the loWer bevel-track secured to the bed-frame, the ring having radial arms, beveled antifriotion-bearing rollers j ournaled to the arms between the bevel-tracks, the shaftbearings located on the bed-frame, and the horizontal driving-shaft mounted in the shaftbearings and provided With a bevel gear-Wheel meshing With the bevel gear-ring; substantially as described.

HENRY J. HUGHES. Witnesses:

M. V. BIDGoon, J. GREEN. 

